Seiko Cal. 5631 - 281

The Seiko 5631-281 represents an important milestone in Seiko's 1973 lineup. It features a Cream dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-5557f7758890]

Also known as: Tuna, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1973

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